readme.md in aws_recon-0.2.27 vs readme.md in aws_recon-0.2.28

@@ -21,10 +21,10 @@
 
 ## Setup
 
 ### Requirements
 
-AWS Recon needs AWS account role or credentials with `ReadOnlyAccess`. Full `AdministratorAccess` is over-privileged, but will work as well. The `SecurityAudit` policy is **not** sufficient as it omits access to many services.
+AWS Recon needs an AWS account role or credentials with `ReadOnlyAccess`. Full `AdministratorAccess` is over-privileged, but will work as well. The `SecurityAudit` policy is **not** sufficient as it omits access to many services.
 
 #### Running via Docker
 
 Use Docker version 19.x or above to run the pre-built image without having to install anything.